"Today was definitely the worst day," said Kournikova.
"It's not doing very well."
"It's totally different practicing as opposed to playing," she said. "The nerves are going. The adrenaline is going. I've got three great matches under my belt. I've played really well, and the fourth match is going to be great, too."
"Obviously, she's (Sharapova) a great young player," Kournikova said. "I'll have to play very well."